GRA- 



121 



GUA- 



step.] Tapering ; becoming longer 

 or shorter by steps. 



grain (gran) n. [L. granum, grain.] 

 Theseedof cereals ; a granular prom- 

 inence on the back of a sepal (dot.}. 



graminifolious (gram'fnifo'llus) a. 

 [L. gramen, grass ; folium, leaf.] 

 With grass-like leaves (bot.}. 



graminivorous (gram'miv'orus) a. 

 [L. gramen, grass ; vorare, to eat.] 

 Grass-eating (zool.}. 



granellae (graneTe) n. plu. [L. dim. 

 of granum, grain.] Small oval, 

 refractile granules consisting chiefly 

 of barium sulphate, found in the 

 tubes of certain Sarcodina (zool.}. 



granellarium (gran'gla'rium) n. [L. 

 dim. of granum, grain.] The system 

 of granellae-containing tubes of 

 Sarcodina (zool.}. 



granose (gran'os) a. [L. granum, 

 grain.] In appearance like a chain 

 of grains, like some insect antennae ; 

 moniliform (zool."). 



granular (gran'ular) a. [L. granum, 

 grain.] Consisting of grains or 

 granules ; appearing as if made up 

 of granules (zool.}. 



granulation (gran'ula'shun) n. [L. 

 granum, grain.] A grain-like eleva- 

 tion or eminence ; appl. arachnoid 

 elevations on the outer surface of 

 the dura mater (anat.}. 



granule (gran'ul) n. [L. granulum, 

 small grain.] A small particle of 

 matter ; a small grain (hot.). 



granule cells, ovoid or spheroid 

 cells formed of soft protoplasm 

 containing basiphil granules. 



granule glands, the prostate glands 

 of flatworms. 



graphiohexaster (graf i6h6ksas'ter) n. 

 [Gk. graphein, to write ; hex, six ; 

 aster, star.] A hexaster spicule 

 with long outwardly-directed fila- 

 mentous processes from four of the 

 rays (zool.}. 



grater (gra'ter) n. [O.F. grater, to 

 scrape.] One of the denticles of a 

 Eunice (zool.}. 



gravity (grav'iti) n. [L.gravis, heavy.] 

 The force of attraction of all bodies 

 towards each other ; the tendency 

 of terrestrial bodies to be drawn 

 towards the earth's centre (phys.}. 



green glands, the excretory organs 

 of certain Crustacea (zool.}. 



gregaloid (grgg'aloid) a. [L. grex, 

 flock; Gk. eidos, like.] Appl. a 

 colony of Protozoa of indefinite 

 shape, usually with a gelatinous 

 base, formed by incomplete division 

 of individuals or partial union of 

 adults (zool.}. 



gregarious (grgga'rius) a. [L. grex, 

 flock.] Tending to herd together ; 

 colonial ; growing in clusters (biol.}. 



grey matter, nerve tissue abund- 

 antly supplied with nerve cells, of 

 greyish colour, internal to white 

 matter in spinal cord, external in 

 cerebrum (anat.}. 



grey nerve-fibres, semitransparent, 

 grey or yellowish-grey, gelatinous 

 non-medullated nerve-fibres, com- 

 prising most of the fibres of the 

 sympathetic system and some of 

 the cerebro-spinal (anat.}. 



groin (groin) n. [lct\.grein, branch.] 

 The depressed part of the body 

 between abdomen and thigh (anat.}. 



groove (groov) n. [Dut. groef, 

 channel.] Any channel, furrow, or 

 depression, as carotid, costal, optic, 

 primitive vertebral groove (anat.}. 



group (groop) n. [F. groupe, group.] 

 A number of plants, or animals, 

 related to one another, and con- 

 sidered collectively (biol.}. 



growing point, a part of the plant 

 body at which cell-division is 

 localized, generally terminal and 

 composed of meristematic cells 

 (bot.}. 



growth, increase in substance of 

 plant or animal, due to anabolism 

 being greater than katabolism 

 (biol.}. 



growth rings, see annual rings 

 (bot.}. 



grumose (groom'os) a. [L. grutnus, 

 hillock.] Clotted ; knotted ; col- 

 lected into granule masses (bot.}. 



grumous (groom'us), see grumose. 



guanin (gwan'In) n. [Peruvian, huano, 

 dung.] A substance contained in 

 guano, also in some plants and 

 certain mammalian glands ; that 

 found in fish corium forms the 

 basis of artificial pearl (biol.}. 



guanylic (gwan'ilik) a. [Peruvian, 

 huano, dung.] Appl. a nucleic 

 acid, yielding guanin, found in the 

 pancreas (phys.}. 



